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Finding the Fourth Proportional to 544,208.40, 815,632.20 and 278,074.80

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Solution

The fourth proportional to 544,208.40, 815,632.20 and 278,074.80 is: 416,764.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,208.40 : 815,632.20 = 278,074.80 : x
  2. Step 2: Convert to fraction form
    544,208.40/815,632.20 = 278,074.80/x
  3. Step 3: Cross multiply
    544,208.40x = 815,632.20 × 278,074.80
  4. Step 4: Simplify right side
    544,208.40x = 226,806,760,888.56
  5. Step 5: Solve for x
    x = 226,806,760,888.56/544,208.40
  6. Step 6: Final answer
    x = 416,764.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.